mes/posix.c

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/* -*-comment-start: "//";comment-end:""-*-
* Mes --- Maxwell Equations of Software
* Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of Mes.
*
* Mes is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* Mes is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <fcntl.h>
char const*
string_to_cstring (scm *s)
{
static char buf[1024];
char *p = buf;
s = s->string;
while (s != &scm_nil)
{
*p++ = s->car->value;
s = s->cdr;
}
*p = 0;
return buf;
}
scm *
open_input_file (scm *file_name)
{
return make_number (open (string_to_cstring (file_name), O_RDONLY));
}
scm *
current_input_port ()
{
return make_number (fileno (g_stdin));
}
scm *
set_current_input_port (scm *port)
{
g_stdin = fdopen (port->value, "r");
}